“If Biden is elected,” a prominent adviser to the campaign said, “he’s going to be 82 years old in four years and he won’t be running for reelection.”

The adviser argued that public acknowledgment of that reality could help Biden assuage younger voters, especially on the left, who are unexcited by his candidacy and fear that his nomination would serve as an eight-year roadblock to the next generation of Democrats.

By signaling that he will serve just one term and choosing a running mate and Cabinet that is young and diverse, Biden could offer himself to the Democratic primary electorate as the candidate best suited to defeat Trump as well as the candidate who can usher into power the party’s fresh faces.

“This makes Biden a good transition figure,” the adviser said. “I’d love to have an election this year for the next generation of leaders, but if I have to wait four years [in order to] to get rid of Trump, I’m willing to do it.”